Gas-producer.



G. M. S. TAIT.

GAS PRODUCER.

APPLICATION FILED MAR.4.1910.

Patented Dec. 21, 1915.

5 SHEETS-SHEET1- WITNESSES:

ATTORNEY M. s. TAIT.

GAS PRODUCER.

APPLICATION FILED MAR. 4, 1910.

1 9 165 34?" Patented Dec. 21, 1915.

5 SHEETS-SHEET 2.

wmvssszs; Hwy/1m ATTORNEY COLUMBIA PLANOGRAPH co..\vAsmNa'r0N. n. c,

G. M. S. TAIT.

GAS PRODUCER.

APPLICATION FILED MAR. 4, 1910.

1,165,347. Patented Dec. 21, 1915.

5 SHEETS-SHEET 3.

( l M U m I i? k ATTORNEY G. M. S. TAIT.

GAS PRODUCER.

APPLICATION FILED MAR. 4. 1910.

1,165,347. Patented Dec.21,1915.

5 SHEETS-SHEET 4.

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WITNESSES: %%7

ATTORNEY JULLMDIA PUNOGRAPH 50.,WASHINGTOI a:

M. S. TAIT.

GAS PRODUCER,

APPLICATION FILED MAR. 4. 1910.

Patented Dec. 21, 1915.

5 SHEETS-SHEET 5 1w NT ATTORNEY WITNESSES.

UMUIA PLANOGRAPH 150,. WASHINGTON. n. c.

'UNTTED STATES PATEN T @FFTQE.

GODFREY M. S. lAIT, OF MONTCLAIR, NEVI JERSEY, ASSIGNOR TO TAI'I PRODUCER COMPANY, OF YORK, N. Y., A CORPORATION OF NEW JERSEY.

GAS-PRODUCER.

Application filed March 4, 1910.

To all whom it may concern:

'Be it known that I, GODFREY M. S. TAIT, a subject of the King of England, and a resident of Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Gas-Producers, of which the following is a full, clear, and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to the construction and organization of the producer at the grate thereof, whereby I am enabled efiectually to hold up the fuel mass yet allowing a maximum of air surface uniformly distributed over the whole area of the grate insuring a uniform fire.

A further feature of the invention is the arrangement by which I am enabled to discharge the ash in an extremely convenient and simple manner without constructing the grate with moving parts adapted to be agitated in the manner of grates heretofore constructed.

Still a further feature of my invention resides in the manner of connecting the grate in the walls of the producer, according to which I utilize as the grate frame the supporting plate of the fire brick with which the producer is lined and combine the parts in a peculiar manner especially adapting them to conditions common in gas producer work. And a further feature resides in the provision of hollow grate bars of peculiar form adapted to the other features of my improvement and by means of which water may be circulated through the bars to cool them and to provide a vaporizer generating vapor for use as an endothermic agent in the draft current.

My invention involves various other features of importance, all of which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference is now had to the accompanying drawings, which illustrate, as an example, the preferred form of the invention.

In said drawings: Figure 1 represents a front elevation of the lower part of the producer equipped with my invention; Fig. 2 is a cross-section of the lower portion thereof, showing in part the ashes as they lie on the grate. Fig. 8 is a plan view of the grate and fire-brick ring; Fig. l is an enlarged Specification of Letters Patent.

Patented Dec. 21, 1915.

Serial No. 547,194.

cross-section of the grate and ring; Fig. 5 is an enlarged section in a direction longitudinal of the grate bars; Fig. 5 is a de tail of the view of one of the grate bars; Fig. 6 is an enlarged plan of the lower section of the grate; Fig. 7 is a sectional elevation showing a modification adapted to grates of large area; Fig. 8 is a sectional elevation showing the grate bars hollow for water circulation; and Fig. 9 is a section on the line 9--9 of Fig. 8.

10 indicates the metal shell of the producer; 11 its fire brick lining; 12 the metal supporting ring of such lining and 10 the downward extension of the metal shell forming the inclosing walls of the ash pit.

As shown in Figs. 1 and 2 the ash pit walls are provided with a draft current opening 1% and an ash door 15. The walls 10 at the top of the ash chamber are also formed with openings 16 in the front and back through which the poke bars are introduced to rake the ashes from the grate as will fully appear hereinafter. 17 indicates doors by which these openings are closed.

As shown best in Fig. 3 the brick-ring 12 is made insections of which there are preferably four, said sections being provided at their ends with flanges 12 bolted together to form a continuous ring. The sections are further provided with hook-lugs 18 extend ing inward from the ring and adapted to enter notches 19 in the ends of the grate bars 20, said grate bars are angle-shaped and are disposed with their sloping sides upward, the bars being open at their lower sides. The bars have cross-end walls 19 in which the said notches are formed. In this manner the bars are supported on the brickring and are held spaced from each other so that the ash may fall between them. The

bars 20 are preferably ribbed on their undersidcs, as indicated at 520 and to prevent sagging at their middles a trussedsupporting beam 21 is provided. This beam extends under the grate bars diametrically across the producer and is adjustably hung at its ends by bolts 22. The beam engages the under edges of the grate bars and is oined thereto by lugs and bolts 23.

As indicated at Figs. 3 and 4c the two end grate bars at the ends of the beam 21 are formed curved corresponding to the curvature of the producer walls, and instead of tively opposite the openings 16.

being of a cross-sectional form in-the shape of an equilateral triangle, are formed with one side sloping in toward the center and the outer side vertical. in Fig. 3 the grate bars are formed with openings 24 in their ridges to increase the air surface of the grate. As shown best in Fig. 4, below the grate bars 20, are a number of bars 25 which have flat or plane up per surfaces excepting the two on the extreme ends. These grate bars 25 are preferably ribbed on their under-sides as indicated at 26 and they are disposed so that they lie respectively under the spaces be tween the upper grate bars 20. As shown in Fig. 2, the lower bars 25 are also respec- By this arrangement the ash falls between the upper grate bars 20 upon and sustained by the lower grate bars 25 at the angle of repose of the ash in the manner illustrated 'inFig. 2. This, it will be seen, effectually sustains the ash and consequently the fuelbed allowing, however, a maximum openin'gfor the flow of the draft current. Tocause the ash to fall it is only necessary to introduce poke bars through the openings 16, sweeping such bars over the 'plane surfaces of the lower grate bars 25, thus disturbing'the ash lying in the angle of repose and causing it to fall through the spaces between the bars 25 into the ash pit and allowing-the-ash above to take the place of the ashthus thrown down. The bars 25 at the extreme sides'have their outer eclgesturned up-to form lips 27 which prevent the'ash from falling at this point and cause the ash 'tofall inward over the inner edge'of said extreme bars 25. For the purpose of easy introduction of the brace beam 21saidlips 27' are recessed at their middle as indicated at 27 in Figs. 4 and 6.

As shown best in Fig. 6 the flat lower bars 25 have their ends widened as at 25 ,so that atsuch ends the lower bars substantially touch each other. On their under surfaces the bars are provided with transverse strengtheningribs 28 and at the widening ends of the bars with ribs 28 exteiiding to bosses 29 formed on the undersides'of the grate bars and matching with each other to form cavities 3O receivingthe bolts 31, by which the lower bars are supported. Said bolts 31 depend from sockets 32 formed in the brick-ring 12 and by adjusting the nuts 33 of such bolts the height ofthe lower grate bars maybe adjusted. In this manner 1 am enabled to adapt the grate readily to different conditions of fuel and operation, insuringthat the parts areso disposedthat' they will operate properly to sustain the ash.

.The gas producer thusarrang'ed provides a most effective grate which may be'easily assembled and readily taken down in' part or inwhole for repair and adjustment. 5 It As illustrated best provides a "wide and uniform area of air passage, insuring uniform combustion of the fuel, and it further provides for uniform shaking of the ash throughout the whole area of the fire. In grates of large area the length of the bars is so great that there is danger of sagging and to overcome this I employ the structure shown in Fig. 7. There both sets of grate bars are divided diametrically across theproducer and their inner ends are supported by an I-beam 34 in turn sustained by legs 35 rising from the floor of the a-sh pit. On the-top of the beam 34 are lugs 36 carrying pins 37 which fit in orifices in the inner ends of the upper series ofbars.

Said bars'aresupported by the beam and properly-spaced by the pins 37 Thelow'er tier of ba'rsrest on the lower flange-of the I-beam'34. At their outer ends the barsare supported and constructed as before de-' scribed.

Figs. 8 an'd'9 show the water cooled form of theinvention. Here the grate is also divided at 'itscenter and 38 indicates the supporting beam which corresponds' with the beam 34 in Fig. 7. In "Figs. Sand '9-the lower bars 25: are constructed :as in :Fig. 7 and supported on the lower flange of the beam 38. Above the upper flange of the beam 38 it is provided with walls, preferably integral with the beam forming two ducts 39 and 40 extending longitudinally through the beam from end to end-thereof. At one end ofthe beam, asshown in Fig; 8,

the beam is dropped and extended un'd'ei the- They rest on the upp'erflange of-the beam 38- and are held spaced from each other by lugs'44' cast" or otherwise formed on-the sides of-fthe walls forming the ducts 39-and=40. In the inner ends of-each -hollow bar 41 two nipples 42- and 43 enter. Thenipples-42 are threaded into the-wall ef the duct 39 and fit looselyin openings in the grate bars, while the nipples 42 as threaded in the ends of the gratebars-and fit loosely in" openings in 'the'upperpart of the wall of the duct 40.

By this arrangement the water enters the grate bars through thepipes42 and is maintained at-the-level of the'pipes 43. WVhen that level is exceeded thewater overflows through the pipes 43. Inthe bottomsof the hollow"-bars"4l are "vertical tubes 45 which are "open throughout 1 and extend through the bottoms 'of'the bars. "Theupper ends of the-tubes are open to allow" the vapor and steam generated to escape. -In assembling thegrate shown in FigsbS and 9, the'h'ollowbarsare tilted slightly so that'the tubes 42 and 43 may be entered in the orifices as described and then the outer ends of the bars are dropped on their supports, which have been before described.

The construction is of much advantage in down draft producers, since it allows of cool ing the grate and preventing their destruction by the intense heat volved. It is also of much importance in serving as a vaporizer to supply steam, particularly in an up draft producer where the steam may pass directly into the fire with the draft current through the grate.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. A gas producer having a grate frame, a series of grate bars arranged side by side and spaced from each other, means for mounting said bars on said frame, a second series of grate bars arranged below the first series and respectively under the spaces between the bars of said first series and having ash supporting top surfaces of a greater breadth than said spaces, whereby the ash falling through the spaces between the bars of the first series lies in angle of repose hillocks upon the bars of the second series, said bars of the second series formed for lateral discharge of the ash, and means for mounting the bars of said'second series on the said grate frame.

2. A gas producer having an encircling grate frame, a series of grate bars arranged alongside of each other and spaced apart, means for mounting the grate bars on the frame, a second series of grate bars arranged elow the first and having fiat upper surfaces, the second series of bars being respectively below the spaces between the bars of the first series, whereby the ash falls through said spaces and rests upon the fiat surfaces of the second series of grate bars at the angle of repose and means for mounting the second series of grate bars on the grate frame.

3. A gas producer having a grate frame, a series of grate bars arranged side by side and spaced from each other, means for mounting them on the frame, a second series of grate bars arranged below the first and opposite the said spaces between them, whereby the ashes fall through the said spaces and lie on the second series of grate bars at the angle of repose and means for adjustably mounting the second series of grate bars so that they may be moved toward and from the first, for the purpose specified.

a. A gas producer having a grate frame, a series of grate bars arranged side by side and spaced from each other, a second series of grate bars arranged below the first series and respectively under the spaces between the bars of the said first series and having ash supporting top surfaces of a greater breadth than said spaces, whereby the ash falling through the spaces between the bars of the first series lies in angle of repose hillooks upon the bars of the second series, ant

means for adpistmg the position of one of said series of grate bars with respect to the other series.

5. A. gas producer having a grate frame, a series of grate bars arranged alongside of each other and spaced apart, the upper surfaces of said bars slanting from the middle, a second series of grate bars arranged below the first and having fiat upper surfaces opposite the spaces between the first series of grate bars, whereby the ash falls between the first series and rests on the second series at the angle of repose and means for mounting the grate bars in the frame.

6. A gas producer having a grate frame, a series of grate bars arranged side by side and spaced from each other, a second series of grate bars arranged below the first series and respectively under the spaces between the bars of said first series and having ash supporting surfaces, whereby the ash falling between the spaces of the bars of the first series lies in angle of repose hillocks upon the bars of the second series, and means for mounting said series of bars on the grate frame, the producer wall having openings therein at approximately the level of the lower series of bars and adapted to admit introduction of an instrument for throwing down the ash resting upon the bars of the lower series.

7. A gas producer having two series of grate bars, one above the other, the bars of each series being spaced from each other, and the bars of the lower series being located beneath the spaces between the bars of the upper series, and having ash supporting top surfaces, the producer having in its wall an opening at approximately the level of the lower series of bars, through which opening an instrument may be introduced for throwing down the ash resting upon the bars of the lower series.

8. A gas producer having a frame a grate frame, an upper series of grate bars incloscd thereby, the grate frame having parts on which the ends of the upper series of bars are engaged to support said bars, a lower series of grate bars in staggered relation to the upper bars, means for suspending the lower series from said grate frame, a supporting beam extending under the upper series of bars intermediate their ends and means for suspending the supporting beam from the grate frame.

9. A. gas producer having two series of grate bars one above the other in staggered relation, the lower series of bars being widened at their ends to contact with each other and suspending means for the lower series, such means passing between the meeting edges of the ends of the grate bars and bearing under such bars tosustain them.

10. A gas producer having an annular grate frame, an upper series of grate bars extendingacross the same and bearingthereon and a lowerseries of grate bars in staggered relation to the upper series and suspended from said grate frame, and ,a supporting beam extending under the first series of grate barsandalso suspended from the grate frame.

11. A gas ,producer having a g-rate frame, a series of grate bars arranged side byside and .spaced from each other, means for mounting them on the frame,a second series of. grate barsarranged below the first and opposite the said spaces between them, whereby the ashes fall through i the said spaces and lie on the secondseries of .grate bars at: the angle of repose and. means. for adjustably hanging the second series of grate bars from the grateframe so that they may be moved toward and from the first, for the purpose specified.

12. In a furnace, superposed .series of grate members, the lower members having substantially horizontal upper faces and being spaced from each other to permit the discharge of ash or other residuebetween them, and the uppermembers being arranged in vertical alinement with the spaces between the lower members, .said upper, members having inclined upper faces'to direct material on to the substantially horizontal faces of the members of the lower series.

13. A grate structure formed of superposed series of members, all of saidniembers being spaced from each other to permit the discharge of material between them, the lower members being disposed in. vertical alinement with the spaces between theupper members, and said lower members having substantially fiat upper faces to permit the banking of material thereon.

14. In agrate structure, superposedseries of fuel supporting members, all of the members being spaced apart to permit the discharge of material betweenthem, the upper faces of the upper members being inclined to permit the ready discharge of materialtherefrom, and the upper faces of the lower members being substantially flat to receive said discharged material, said lower members being disposed substantially in vertical alineessee? ment with the space between the upper members. Q

Ina grate structure,upper and lower series of spaced grate members, said upper members having inclined faces for directing material intothe spaces therebetween, the members of the lower series being spaced from each other to permit the discharge of ash or other residue between them, said lower members being of greater width than the spaces between the upper members and.

arranged to receive andsupport all material discharge between saidupper members.

16. The combination with a furnace; of upper-and lower series of similar grate members, the members of the upper series having their lower faces in the same horizontal plane the members of the lower series being disposedfbelow and widerthan the spaces between the upper members and having fiat upper faces n thesame horizontal plane, the

members of the, lower series being spaced.

from each other. to permit the discharge of ash or otherresidue between. them.

liln a furnace, a. plurality of upper grate bars separated, from each other to permit the discharge ,of material therebetween, a lower series of bars parallel with said upper bars and disposed below the spaces between the upper bars, said. upper bars constitutmg means forfeeding fuel on vto the lower bars, and said lower bars being of a widthdetermined by the angleof pile "of the fuel, such width being sufficient to prevent the direct passage of fuel over the edgesof said bars by grayity.

18. The combination with a furnace; of

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

